100% polyester lining is skin-friendly & comfortable. High quality 290T polyester makes it durability. You will be comfortable no matter how hard and rough the ground is. Keep you warm and safe even in near-freezing temperatures. Waterproof, double-layer technology keep you warm in wet conditions and prevent you from getting damp. The sleeping bags are designed to ensure that after a tiring day of trekking, hiking, travel or any other exploration you can get a good and relaxing night's sleep. If you need other types of product, you can also contact us!